Missing PGP Validation in Gentoo Portage
CVE-2016-20021

9.8CRITICAL

Key Information:

Vendor

Gentoo

Status
Portage
Vendor
CVE Published:
12 January 2024

What is CVE-2016-20021?

A vulnerability exists in Gentoo's Portage package management system that allows executed code to potentially run without proper PGP signature verification. This occurs specifically in the emerge-webrsync operation, which downloads a .gpgsig file but fails to validate its signature. As a result, users may inadvertently execute unverified code, posing a risk to system integrity and security. This vulnerability affects versions of Portage prior to 3.0.47, emphasizing the need for security measures and updates to protect Gentoo environments.

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References

https://wiki.gentoo.org/wiki/Portage
https://gitweb.gentoo.org/proj/portage.git/tree/NEWS
https://bugs.gentoo.org/597800

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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